Mtgox api v1 post data to url problem

[WarlockTheGrait]

hello. i'm trying to use new MtGox api. (in Java client) in v0 when i send  "https://mtgox.com/api/0/sellBTC.php" with necessary parameters it works but now, when i trying to use url = "https://data.mtgox.com/api/1/BTC"+"USD"+"/private/order/add"; with right parametrs
InputStream is = connection.getInputStream();
thwros Exception "file not found".
what am I doing wrong?